B64C 27/46
Blades
B64C27/46 (Blades) appears on 1,255 US grants and 1,139 published applications in this corpus.
Search patents in B64C- Granted patents
- 1,255
- Published applications
- 1,139
- Assignees
- 338
- Inventors
- 1,890
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 10 | 0 |
| 1978 | 15 | 0 |
| 1979 | 10 | 0 |
| 1980 | 4 | 0 |
| 1981 | 15 | 0 |
| 1982 | 14 | 0 |
| 1983 | 10 | 0 |
| 1984 | 9 | 0 |
| 1985 | 8 | 0 |
| 1986 | 10 | 0 |
| 1987 | 12 | 0 |
| 1988 | 9 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 18 | 0 |
| 1994 | 13 | 0 |
| 1995 | 8 | 0 |
| 1996 | 12 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 14 | 0 |
| 2000 | 17 | 0 |
| 2001 | 20 | 4 |
| 2002 | 13 | 18 |
| 2003 | 10 | 2 |
| 2004 | 10 | 15 |
| 2005 | 6 | 17 |
| 2006 | 9 | 21 |
| 2007 | 17 | 17 |
| 2008 | 6 | 13 |
| 2009 | 18 | 20 |
| 2010 | 20 | 24 |
| 2011 | 12 | 11 |
| 2012 | 12 | 28 |
| 2013 | 13 | 34 |
| 2014 | 26 | 41 |
| 2015 | 39 | 39 |
| 2016 | 45 | 53 |
| 2017 | 47 | 128 |
| 2018 | 46 | 94 |
| 2019 | 94 | 110 |
| 2020 | 143 | 96 |
| 2021 | 78 | 86 |
| 2022 | 80 | 63 |
| 2023 | 71 | 55 |
| 2024 | 71 | 65 |
| 2025 | 62 | 49 |
| 2026 | 35 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of stabilizing articulated rotor blade6 Oct 2026US 12,752,914 B2Lockheed Martin Corporation
- Helicopter rotor head structure15 Sep 2026US 12,735,178 B2Tibet Chuangbo General Aviation Technology Co., Ltd.
- Distributed propulsion system for vertical take off and landing closed wing aircraft8 Sep 2026US 12,728,983 B2Textron Innovations Inc.
- Air vehicle8 Sep 2026US 12,728,990 B2Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi
- Rotorcraft with a blade tip illumination system8 Sep 2026US 12,729,012 B2Airbus Helicopters Deutschland GmbH
- Systems and Methods for Manufacturing Composite Laminate Structures8 Oct 2026US 2026/0307787 A1
- Vertiport with conveyance platforms17 Sep 2026US 2026/0274405 A1Flyon Aerosystems Ltd.
- Pivoting aircraft rotor assemblies17 Sep 2026US 2026/0274406 A1Textron Systems Corporation
- Reduced noise rotor for aerial vehicles17 Sep 2026US 2026/0274457 A1Zipline International Inc.
- Systems and methods for vertical takeoff and landing vehicle with stator stabilization10 Sep 2026US 2026/0264849 A1MagLev Aero Inc.
Most cited
By later US patents
- Composite wind turbine rotor blade and method for making same155US 4,976,587 ADWR Wind Technologies Inc. · 1990
- Erosion resistant surface protection106US 5,486,096 AUnited Technologies Corporation · 1996
- Honeycomb spliced multilayer foam core aircraft composite parts and method for making same88US 4,687,691 AUnited Technologies Corporation · 1987
- Active blowing system for rotorcraft vortex interaction noise reduction78US 5,813,625 AMcDonnell Douglas Helicopter Company · 1998
- Method of manufacture of hollow pieces73US 3,967,996 A1976